The HST is a machine composed of three modular inline sections. The first module inserts tabs in the short side of the frame, the second module rotates the frames 90⁰, and the third module inserts tabs in the long side of the frame. The computerized control system allows a very simple way to program the work cycles. Once you select a program, the machines changeover is performed automatically. All axis of the machine are servo driven, therefore only minimal assistance is needed. The frame rotation module is equipped with several belts with independent speed (by servo motors) that precisely rotates frames of various sizes. The custom WINDOWS™ based software is extremely easy to use and it can be connected to a barcode scanner. The user created programs are protected by a password and several user levels can be set. There is almost an unlimited capacity of programs that can be stored in the PC.